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User controlled arbitrary kernel address write in QCEDev driver (CVE-2016-6738)

Release Date:

November 30, 2016

Affected Projects:

Android for MSMFirefox OS for MSMQRD Android

Advisory ID:


CVE ID(s):



The following security vulnerabilities have been identified: CVE-2016-6738 When processing the ioctl QCEDEV_IOCTL_ENC_REQ the user can write to an arbitrary memory address with a specially crafted creq structure. This specially crafted structure circumvents checks that ensure that data is not written to not permitted kernel memory.

Access Vector: Local
Security Risk: Medium
Access Vector: Local

Affected Versions:

All Android releases from CAF using the Linux kernel.


We advise customers to apply the following patches:

Individual Patches


This issue was reported to Google by Gengjia Chen (@chengjia4574) and pjf ( of IceSword Lab, Qihoo 360. Qualcomm Innovation Center, Inc. (QuIC) thanks Google for bringing this issue to QuIC's attention.


Updated revision. On Dec. 6 updated acknowledgment section.